Improvement in circular-saw guards



0. A. DEAN.

Circular-Saw Guards.

Paten'td August 12 AM. FHOYO'ZITHOGIMPHICCC #VXK USEORNEJSPROCESS UNITEDSTATES PATENT QFFIGE.

OSCAR A. DEAN, OF BETHEL, VERMONT.

IM'P ROVEMENT IN CIRCULAR-SAW GUARDS.

Specification forming part of Letters Patent No. 141,702, dated August12, 1873, application filed June 21, 1873.

To all whom it may concern:

Be it known that I, OSCAR A. DEAN, of Bethel, in the county of Windsorand State of Vermont, have invented a new and useful Improvement inCircular-Saw Guard, of which the following is a specification:

The object of this invention is to provide means for protecting theoperator in using circular saws 5 and consists in a guard consisting oftwo or more pieces, hereinafter more fully described.

In the drawing, Figure l is a sectional side elevation looking from theline .90 a, Fig. 2. Fig. 2 is a plan view looking down from the line 3 3Fig. 1.

Similar letters of reference indicate corresponding parts.

A represents the table. of the saw-frame. 0 is the circular saw. I) isthe adjustable gage to govern the width of the stuff sawed. Attached tothis gage is the slotted stand E, made in either one or two pieces,standing perpendicular to the table. F is the slot in this stand. G is aslotted horizontal guard-bar, with a grooved head, H, which slides upand down in the slot F, and is fastened in any desired position by meansof the thumb-screw I. J is a guard, which is forked so as to extend oneach side of the saw, as seen in Fig. 2. The head K of this guard isconfined in the slot of the bar G by means of the thumb-nut L passing upvertically from the table through a mortise in the guard J in the plateM. This plate is on a line with the saw, and serves as a support for B Bare the legs.

fastening the guard J, and also as a spreader to prevent the saw frombinding. The sawguard, therefore, consists of the horizontal guard-bar Gand the horizontal forked guard J. The former slides on the head of thelatter when the width-gage D is adjusted, the forked guard being keptstationary laterally by the verticalplate M. By raising and lowering theguard-bar G the two guards G and J may be kept nearly in contact withthe piece of lumber which is being sawed, and all danger from pieces,splinters, or loose knots being thrown toward the operator is prevented.The head of the guard-bar G is slipped down from the top of the stand E.N is a cross-piece, by which the two upper ends of the stand are united,and is kept in place by the thumb-nuts O 0.

Having thus described myinvention, I claim as new and desire to secureby Letters Patent- 1. In combination with a circular saw, a guardconsisting of the slotted guard-bar G and the slotted guard J, arrangedsubstantially as shown and described, for the purposes set forth.

2. The guard formed as above described, in combination with the gage D.

3. The vertical plate M, in combination with the guard-bars G and J,substantially as shown and described.

OSCAR A. DEAN. Witnesses:

H. O. TENNANT, M. J. GILMAN.

